First preheat the oven to 425 degrees. Take the fillets and season them with salt, pepper, and garlic powder, then cover with the Mamacita's Salsa Fresca in a shallow dish. Let sit while preparing other ingredients. Cut yellow pepper, green pepper, and onion into thin slices. Open a square of the parchment on your work surface and fold it in half crosswise. In the center of one half, place a few pepper slices and onion slices. Then place a fillet on top, laying a few more vegetables on top, then spooning on some of the Salsa Fresca, and lightly season again.

Then fold over the other side of the parchment. Seal the edges by folding from one open-side corner to the other, tightly keeping the edge closed. Once sealed, place on a baking sheet and start the process over until you have completed the amount your serving. Brush the tops of the parchment packets with olive oil and place in the oven for 8-10 minutes. Carefully cut open the tops (careful of the steam!) and season with lemon juice, garnish with cilantro leaves, and serve!